Paypal merchant acceept or deny each transcation - paypal

I'm developing website for online shopping in which i have integrate paypal as payment method.
but, i want each transaction must be confirmed by merchant so that merchant can accept or reject(decline-deny) each transaction.
payments for the rejected transaction will be refunded to payer. and accepted transaction will we processed as confirmed order.
is their any way to do this ?
please help me on this. thanks in advance
I found my answer.
now i will go with "paypal authorization capture api"
for this i need to use paymentaction="authorization" in my paypal standard payment form that make the transaction on hold.
and at admin side i need to make that onhold transaction make capture to proceed order or void orders to cancel i just need transaction id their.
i will use "paypal authorize and capture api" for that...

you should manually lo-gin into you merchant account to reject(decline-deny) each transaction.

Related

How to interprete paypal billing agreement creation?

I am building a paypal subscription system but i have some difficulties to understand some points. When using sandbox i can't simulate a payment denial process so when the payment is made, paypal redirect me to my "approval url callback" and a billing agreement is created.
So i want to know , in a real situation, will paypal redirect me to the approval url and create this billing agreement even if the payment didn't occur yet ? or this one can be created if and only if the payment is accepted ? (So if paypal denied the payment the billing agreement will never be created)
In my case, my customers will need to access to some paid features of my website so, should i wait for the "ipn webhook notification (PAYMENT.SALE.COMPLETED)" which can take several minutes to be fired to my endpoint, or can i grant access immediately after the billing agreement is created ?
Which is the most secure thing to do ?
thanks.
If the user cancels the checkout, Paypal will redirect to your cancel URL.
But the failed payment cases are not clear to me either. I believe that the agreement will be created even if the payment fails, since it needs to exist for the payment attempt to be done, but I don't work at Paypal :).
My approach is to activate the subscription on a successful redirect no matter what, [edit: the execute response returns an agreement_details.next_billing_date in the past, so you can't use that] with a short initial subscription expiration (4h). When our webhook receives a PAYMENT.SALE.COMPLETED message, we fetch the agreement billing agreement details, and update the subscription expiration to the new agreement_details.next_billing_date. But if the webhook receives a PAYMENT.SALE.DENIED, we just let the subscription expire.
HTH.

How can I prevent merchants from capturing pending Paypal authorizations?

We're running a marketplace with merchants that sell services to customers. Payments go directly from the customer to the merchant, and our server facilitates this, through the Authorize & Capture mechanism in Paypal Express Checkout.
In checkout, when the customer's Paypal is authenticated an authorization is created, and at the end of the interaction with the merchant the payment is captured by our server on behalf of the merchant.
There is, however, a back door enabling the merchant to intervene directly on Paypal and to capture the funds in the pending authorization before the order is completely delivered. We'd like to prevent that, or at least insert a notice somewhere in the merchant's Paypal account not to capture the payment, and to instead let our server do that for them when the order is delivered. Any ideas?
Normally, you can't do that. But you can read IPN Paypal message to know if transaction are effectives. Take a look to Paypal IPN Guide, retrieve informations and compare to your informations database transaction to check if all is right.

Can i use pre-approval using PayPal website payments pro?

I am making a system in which user permits pre-approval of amount. I've used pre-approval with chained payment. But the problem is that my customer gets redirected to PayPal site and also he/she must have a PayPal account or need to create one. So can i make pre-approval payment using PayPal website payment pro? So my customers will not get redirected to PayPal account. And the process becomes more fast? Note :- I don't want to use authorization and capture method. Thanks.
Edit
One more question :- If i make the website in the UK and the currency in GBP, can I still use the American Paypal account for this?
Auth and Capture is what you're asking for, but then you say you don't want it..?? That's what gives you the functionality you're after, though.
You could do a $0 auth and then run DoReferenceTransaction when you're ready to process the payment as opposed to capturing an actual auth if you want.
Those are your only options when working with Pro, though, and it would give you the same sort of preapproval experience for the buyer.
Here are the steps to accomplish what you're after.
Use DoDirectPayment to run a $0 Authorization (card verification). Users will enter their credit card details directly into a form on your site without any redirection to PayPal (and without any knowledge PayPal is being used at all unless you notify them some way.)
Save the transaction ID that you get form this card verification into your transaction history for the customer in your database. This ID is what will be used to process future payments using that credit card.
When you're ready to process a payment for this customer, pull the ID out of the database and use it with a DoReferenceTransaction request to process any amount you need to.
So the card verification is your preapproval, and then running reference transactions are the same as running Pay requests with a Preapproval key. Both methods accomplish the same thing, but one is with direct credit cards and the other is not.
If you're using PHP you can use this PayPal PHP SDK to make all of the API calls very quick and easy for you. If you're using some other language then there are SDKs available for those as well I'm sure.
Please correct me if i am wrong, #Andrew Angell #Ved Pandya
Auth and Capture or Capture payments later method allows you to do direct payment, but it comes with additional charges, which might not suitable for crowdfunding model as refund/ cancel payment is very frequent
Auth and Capture: You are required to pay $0.30 for each "Card Verification Transactions"
Capture payments later: You are required to pay $0.30 for each "Uncaptured Authorization" that you triggered
https://www.paypal.com/us/webapps/mpp/merchant-fees

Paypal integration in php by storing user credentials

I tried to integrate paypal in my website and I was able to implement it . I tested the transcations with sandbox account provided by paypal. For each transaction, buyer need to enter his credit card details or other paypal account informations. So I would like to store the user credentials in my database and then at the time of transaction, make the buyer proceed with transaction without entering details again. Can you please suggest if there is any possibility for implementing this or any suggestions to do so? All suggestions are welcome.
You wouldn't store the buyer's PayPal credentials (because that's about the worst crime you can commit in internet security), but you can create a billing agreement with the buyer. The billing agreement would allow you to charge the buyer, at a later date, without having to send the buyer to PayPal again to approve the payment. This page tells you how to do it: https://developer.paypal.com/webapps/developer/docs/classic/express-checkout/integration-guide/ECReferenceTxns/

How to check Payment failure for Paypal Express Checkout

We are using Paypal recurring billing service (using Express Checkout) at our website for monthly subscription.
Since we have an Australian account so we are not able use the DPRP (Direct Payment Recurring Payment) service offered by Paypal because it seems, DPRP service is limited
to only few countries (US, UK and Canada).
In Express checkout payment details are received at Paypal Website. So we do not have any information, whether the payment failed, user pressed the Back button in browser or He/She intentionally clicked the cancel payment.
After speaking to Paypal support team we get know that there could be multiple possible reason for Payment failure, and seller has to contact Paypal by themself. So we can
not provide any troubleshooting for that at our website.
So we want to know, Is there any possible solution to avoid this or atleast can we diffrentiate between the user for whom payment failed and who intentionally moved to
our website back without doing payment because this way we are not only unable to followup with them but also loosing a part of the customer base, interested in our service.
Any help in this is Appreciated.
Thanks
You should implement the Pay Pal IPN (Instant Payment Notification).
You configure the IPN url address on your PayPal merchant account settings. This page is simple HTML page with server-side programming that is listening for requests coming from PayPal.
There's no need to do something extra in the checkout process for making IPN work. Once you set this up, it will automatically work.
Every time something happens with a transaction in your merchant account, e.g. transaction completed/failed/canceled, PayPal will send an HTTP Post to your IPN listener URL.
Here you can get all the relevant information about the transaction, like the payer ID, the payment status. With this information you can decide what to do with your customer's order.